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This document describes a multi-junction solar cell that uses two sub-cells to absorb photons of different energies more efficiently. The top high band gap cell absorbs the high energy photons, while the bottom low band gap cell absorbs the low energy photons that pass through the top cell. Together the two sub-cells can absorb a wider range of the solar spectrum to increase overall efficiency.

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Ratan Kotipalli
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53 views1 page

Image 1

This document describes a multi-junction solar cell that uses two sub-cells to absorb photons of different energies more efficiently. The top high band gap cell absorbs the high energy photons, while the bottom low band gap cell absorbs the low energy photons that pass through the top cell. Together the two sub-cells can absorb a wider range of the solar spectrum to increase overall efficiency.

Uploaded by

Ratan Kotipalli
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PDF, TXT or read online on Scribd
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full spectrum

High band gap cell

The top cell absorbs the high energy photons


The bo6om cell absorbs the low energy photons

Lowband gap cell

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